Equity orders inception

Hi there!

We start with the simplest case, Equity Orders Inception.

What does a professional user need to create an order? Not many things:
Order side: Buy or Sell.
Quantity: how many shares do you want to buy/sell.
Weight: shows the weight of the order in the portfolio. This field does not have to be editable, but it would be nice to know this number.
Time in force:«Good’till cancel» – the order will be valid until it is canceled;
«Good’till day» – the order will be valid until the end of the day;
«Good’till date» – the order will be valid until the end of the chosen day.
Order type:
Market – the order will be executed at an affordable price.
Limit – this is a price below which you cannot sell (above which you cannot buy).

Addition information:
Purchase costs/Sale proceeds – approximate transaction value.
Available cash – help to understand how much you can spend.
How many shares can you buy or sell – it is calculated based on the current market price or the number of shares in the portfolio.
Stock exchange name and working hours.

Eager to hear your thoughts and comments!
Cheers :)
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P.S.
Next time I will write about «Stop Loss» and «Take Profit»